I am delighted with my new Linux Mint DE powered laptop ( I am migrating from Gentoo after 8 years ...) . The only issue that I have is there is no suspend or hibernate button after the "Quit" dialog. I have tested pm-suspend and pm-hibernate from console and It works just some. I am trying to find a way to put those buttons back in place without success. I hope we can help each other.

Do you have swap-partition ? I had the same problem (i've forgot to make swap during install ) . After making swap partition the hibernate and suspend buttons appeared in the quit dialog .

P.S Making of swap partition :
Using Gparted make new partition (choose new- linux swap about --the size is up to you)

Once you create the partition, you can inform your system to use it this way. Say you created /dev/sda7 (7 is mine , yours will maybe be 4 or whatever--u can see in gparted after you make it) to use as swap. Try these commands:

sudo mkswap /dev/sda7
sudo swapon /dev/sda7

That makes the partition active as swap space on your running system.

To make it use the new partition as swap space on reboot, edit your /etc/fstab file. To use gedit in the graphical user space, get a command line with alt-F2. Then enter the command:

gksudo gedit /etc/fstab

Add to the file this line:
Code:

/dev/sda7 none swap sw 0 0

Save the file, close the editor and reboot. Once you have used some programs, check to see if swap is being used with the free command. ( Or u can see in the system monitor - resources tab )